Thank you @limegreen19! That was really helpful. I'm going to call tomorrow and find out. I also found this in the FAQ:
MS-CSDR: Master of Science is for students who do not plan to obtain teacher certification following graduation
MS-CSDR-IN: Master of Science Initial Certification is for students who do plan to obtain teacher certification following graduation
MS-CSDB-DU: Master of Science Bilingual Extension - Dual Certification is for students who plan to obtain teacher certification following graduation and also plan to complete the bilingual extension
MS-CSDR-PF: Master of Science Professional Certification is for students who have extensive professional teaching certification and who already have NY state teacher certification.
So maybe it isn't necessarily a longer program?